Corrections and clarifications

• Primary care trust finances, part 2: We published two tables showing the statistics that emerged from a Guardian/Civitas survey of the financial state of NHS primary care trusts in England, based on figures cited in board reports from 100 (out of 152) of these PCTs. A table in the newspaper listed the 10 highest-deficit PCTs found by the survey (In the red, 3 March, page 12), while the full list of deficit trusts was given on theguardian.com's datablog (The primary care trust deficits listed). Both should have given a clear time reference, to avoid being misread: what the figures showed was how each PCT's in-year spending stood in late 2009 (typically at November/December), as reported to the PCT's board meeting in January/early February 2010.

Four figures were also incorrect. For Central and Eastern Cheshire PCT an in-year revenue deficit of £577,000 as of December 2009 was listed, but this should have been shown as much higher, at £4.2m, according to January board papers. On the other hand, a £3.3m deficit as of December was wrongly attributed to Trafford PCT; it actually applied to Trafford Healthcare NHS Trust (a provider), while Trafford PCT itself reported a £100,000 surplus. A £3.3m deficit was given for Hammersmith and Fulham PCT when this was, rather, its overspend as of November for acute hospital services; the trust reported its overall budget in balance. And Great Yarmouth and Waveney PCT's £413,000 revenue deficit as of December should have been shown as a surplus.

• An article headlined UK must 'regain control of North Sea oil' (8 March, page 23) described Peter Odell, an academic expert in the politics and economics of the global energy business, as an adviser to the Opec oil cartel. He has asked us to make clear that this is not the case.